Templates in version2.2

Using Arduino Programming Questions
#1

This code compiles and runs fine in version 2.1, but gives the following error in version 2.2.

EEPROM_template_test:1: error: ‘T’ has not been declared
EEPROM_template_test:2: error: ‘T’ has not been declared

Has something changed that I wasn’t aware of?
Is there a way to fix this?

#include <EEPROM.h>




template<class T>
void writeToEEPROM(int address, T& value)
{
  union {
    T type;
    byte b[sizeof(T)];
  } temp;
  
  temp.type = value;
  for (int i = 0; i < sizeof(T); i++)
  {
    EEPROM.write(address + i, temp.b[i]);
  }
}

template<class T>
void readFromEEPROM(int address, T& value)
{
  union {
    T type;
    byte b[sizeof(T)];
  } temp;
  
  for (int i = 0; i < sizeof(T); i++)
  {
    temp.b[i] = EEPROM.read(address + i);
  }
  value = temp.type;
}



void setup()
{}

void loop()
{
}
#2

You will have to move the template definitions to a separate header file (Tab).

#3

This is dissapointing. I had a lot of code that was working in 2.1 that doesn't work now. I may have to go back to 2.1 to avoid having to rewrite everything.

What's in the new version that is different?

#4

http://arduino.cc/en/Main/ReleaseNotes

#5

Yeah, I saw that, but I don't see what is making my templates work differently. Does it have something to do with compiling the user sketch first?

#6

This is what the IDE sends to the compiler…

#include <EEPROM.h>

#include "WProgram.h"
void writeToEEPROM(int address, T& value);
void readFromEEPROM(int address, T& value);
void setup();
void loop();
template<class T>
void writeToEEPROM(int address, T& value)
{
  union {
    T type;
    byte b[sizeof(T)];
  } temp;
  
  temp.type = value;
  for (int i = 0; i < sizeof(T); i++)
  {
    EEPROM.write(address + i, temp.b[i]);
  }
}

template<class T>
void readFromEEPROM(int address, T& value)
{
  union {
    T type;
    byte b[sizeof(T)];
  } temp;
  
  for (int i = 0; i < sizeof(T); i++)
  {
    temp.b[i] = EEPROM.read(address + i);
  }
  value = temp.type;
}

void setup() { }
void loop() { }

The IDE is not correctly prototyping the templates.

#7